Abstract: A clamping structure for use in holding adjacent, aligned, flanged pipe ends together can be constructed utilizing a band consisting of a plurality of elongated coupling segments located in end-to-end relationship. Each of the clamping structures includes a clamping surface; these clamping surfaces are dimensioned so that when the band is in position around the flanged ends the clamping surfaces engage and fit closely against the flanges on the pipes so as to hold the flanges together. A locking arm is pivotally mounted on one of the terminal ends of the band. A latching element is carried by the locking arm in such a manner that the arm may be pivoted between a position in which the latching element is spaced from the latch retainer for removal and/or for installation of the band and a position in which the latching element engages the retainer so as to secure the band in position.